1. Definition of Subtraction:
    • Subtraction is the process of taking away one number from another.
    • It is often described as “how many are left” after something is taken away.
  2. Subtraction Sentence Structure:
    • A subtraction sentence is written as:
      Number – Number = Result
      For example, 7 – 3 = 4 means 7 take away 3 equals 4.
  3. Understanding the Symbols:
    • The minus (-) sign is used for subtraction.
    • The equals (=) sign shows the result of the subtraction.
  4. Examples of Subtraction Sentences:
    • 8 – 3 = 5
    • 6 – 2 = 4
    • 10 – 1 = 9
  5. Word Problems for Practice:
    • Example 1: β€œI have 9 apples. I give 2 apples to my friend. How many apples do I have left?”
      9 – 2 = 7
    • Example 2: β€œThere are 5 birds on the tree. 3 fly away. How many birds are still on the tree?”
      5 – 3 = 2
  6. Key Vocabulary:
    • Subtract: To take away.
    • Left: The remaining amount after subtraction.
    • Take away: Another way to say subtract.
    • Equals: The result of the subtraction.